CVE-2025-14861 Affecting firefox package, versions <146.0.1-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-FIREFOX-17764483
- published1 Jul 2026
- disclosed18 Dec 2025
Introduced: 18 Dec 2025
CVE-2025-14861 (opens in a new tab)How to fix?
Upgrade Chainguard firefox to version 146.0.1-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
Memory safety bugs present in Firefox 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146.0.1.